Yun Yin, an orphan girl from the previous dynasty, assumed the alias of A Yue, a palace maid, and hid the birthmark of a phoenix in the palace of the new dynasty. She wanted to find out the truth about the annihilation of her family and avenge her family and country. She relied on her gift of never forgetting memories and her ability to master pharmacological secrets, but she was accidentally involved in a three-way game between the prince Xiao Chen, the powerful minister Xie Heng, and the enemy's proton Yu Wenzhao, and became the most critical chess piece in the game.
The gentle prince's probing and exploiting, the cold and powerful ministers' secret surveillance, and the dandy proton's false approach allowed her to spread intelligence, stir up party disputes, and break up conspiracies in the whirlpool of the palace and court with her small skills. The warm companionship of the foodie palace maid Bell, and the repeated trappings of the beloved concubine have become the thorns and armor for her to move forward.
When Ling Dang died and clues that her memory had been tampered with emerged, and when her mother's relics contained jade seal fragments and secrets, Yun Yin was shocked to realize that her identity as the princess of the previous dynasty was actually a shocking scam. Her mixed-race background is exposed, the real culprit of the family's annihilation appears, and her obsession with revenge is shaken. Amidst the disputes over imperial power and the love between her children, she will finally decide whether to restore the old dynasty and establish a new order, or break away from the chess game and become her own chess master. In the deep palace game, Feng Ying wakes up. As a palace maid, she disturbs Beijing and finally becomes the unparalleled king behind the scenes.
